EXHIBIT 31.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Douglas E. Swanson, certify that:

         1. I have reviewed this annual report on Form 10-K of Oil States
     International, Inc. ("Registrant");

         2. Based on my knowledge, this annual report does not contain any
     untrue statement of a material fact or omit to state a material fact
     necessary to make the statements made, in light of the circumstances under
     which such statements were made, not misleading with respect to the period
     covered by this annual report;

         3. Based on my knowledge, the financial statements and other financial
     information included in this annual report fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the Registrant as of, and for, the periods presented in this annual report;

         4. The Registrant's other certifying officer and I are responsible for
     establishing and maintaining disclosure controls and procedures (as defined
     in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Registrant and we
     have:

            a. designed such disclosure controls and procedures or caused such
         disclosure controls and procedures to be designed under our supervision
         to ensure that material information relating to the Registrant,
         including its consolidated subsidiaries, is made known to us by others
         within those entities, particularly during the period in which this
         annual report is being prepared;

            b. evaluated the effectiveness of the Registrant's disclosure
         controls and procedures as of the end of the period covered by this
         report based on such evaluation;

            c. disclosed in this report any change in the Registrant's internal
         control over financial reporting that occurred during the Registrant's
         most recent fiscal quarter (the Registrant's fourth fiscal quarter in
         the case of an annual report) that has materially affected, or is
         reasonably likely to materially affect, the Registrant's internal
         control over financial reporting; and

         5. The Registrant's other certifying officer and I have disclosed,
     based on our most recent evaluation of the internal control over financial
     reporting, to the Registrant's auditors and the audit committee of
     Registrant's Board of Directors (or persons performing the equivalent
     functions):

            a. all significant deficiencies in the design or operation of
         internal control over financial reporting which are reasonably likely
         to adversely affect the Registrant's ability to record, process,
         summarize and report financial data; and

            b. any fraud, whether or not material, that involves management or
         other employees who have a significant role in the Registrant's
         internal control over financial reporting.

                                           /s/ DOUGLAS E. SWANSON
                                           -------------------------------------
                                           Douglas E. Swanson
                                           President and Chief Executive Officer

Date: March 5, 2004